Public key missing for Guix installation script?

[evan . straw99]

Hello,
Tried to post this once before but it got rejected from the mailing
list for some reason.
I'm trying to install GNU Guix using the installation script
(https://git.savannah.gnu.org/cgit/guix.git/plain/etc/guix-install.sh)
.

Early on, there is a GPG verification step that fails due to a missing
PGP key. The script tells me:
[1550113585.102]: Starting installation (Wed Feb 13 19:06:25 PST 2019)
[1550113585.106]: [ PASS ] verification of required commands completed
[1550113585.113]: [ FAIL ] Missing OpenPGP public key.  Fetch it with
this command:
  gpg --keyserver pool.sks-keyservers.net --recv-keys
3CE464558A84FDC69DB40CFB090B11993D9AEBB5

However, upon running that gpg command, I receive the following error
message:
"gpg: keyserver receive failed: No data"

It appears this key is missing from the key server. Additionally, I've
been searching all around other key servers for this key and I can't
find anything.
Not sure what to do about this. Is there a place I can find this key,
or is it safe to just comment out the verification step in the
installation script for now?

Thanks,
- Evan